RONALD E PAJAK LSW
NPI 1871867044
Social Worker in Chicago, IL
About Ronald E Pajak Lsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
RONALD E PAJAK LSW (NPI 1871867044) is an individual social worker in Chicago, Illinois, licensed in Illinois (150.013219) and active in the NPI registry since March 2012. He is enrolled in Medicare PECOS and is a graduate of Other (2011).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ronald E Pajak Lsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Ronald Pajak reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Chicago, IL 60640
- Reassigned Medicare billing, Illinois enrollment
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60601
CHICAGO, IL 60601
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Ronald Pajak's NPI number?
The NPI number for Ronald Pajak is 1871867044. It was assigned to this individual provider in the NPPES registry on March 5, 2012.
Where is Ronald Pajak located?
Ronald Pajak practices at 180 N Michigan Ave Suite 410, Chicago, IL 60601. The listed phone number is (312) 925-7800.
What is Ronald Pajak's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Ronald Pajak enrolled in Medicare?
Yes. Ronald Pajak is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Ronald Pajak's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ronald Pajak reassigns Medicare benefits to Ravenco Inc (Chicago, IL). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Ronald Pajak's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Ronald Pajak was last updated on March 5, 2012. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ronald E Pajak, LSW · NPI 1871867044
Social Worker provider in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since March 5, 2012.
## Identity
- **NPI:** 1871867044 (Entity type: Individual)
- **Enumerated:** March 5, 2012
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** 150.013219 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 180 N MICHIGAN AVE, SUITE 410, Chicago, IL 60601-7401
- **Phone:** (312) 925-7800
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Ravenco Inc (NPI 1528791845, Chicago, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2011
## Record status
- **NPPES last updated:** March 5, 2012
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Source: [NPI Profile](https://npiprofile.com/npi/1871867044) · Data from the CMS NPPES public registry.